@article{fdi:010081513,
  title = {{G}eographic monitoring of insecticide resistance mutations in native and invasive populations of the fall armyworm},
  author = {{Y}ainna, {S}. and {N}egre, {N}. and {S}ilvie, {P}ierre and {B}revault, {T}. and {T}ay, {W}. {T}. and {G}ordon, {K}. and d{A}lencon, {E}. and {W}alsh, {T}. and {N}am, {K}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}imple {S}ummary {T}he moth fall armyworm ({S}podoptera frugiperda) is a major agricultural pest insect damaging a wide range of crops, especially corn. {F}ield evolved resistance against {B}acillus thuringiensis ({B}t) toxins and synthetic insecticides has been repeatedly reported. {W}hile the fall armyworm is native to the {A}mericas, its biological invasion was first reported from {W}est {A}frica in 2016. {S}ince then, this pest has been detected across sub-{S}aharan and {N}orth {A}frica, {A}sia, and {O}ceania. {H}ere, we examine the geographical distribution of mutations causing resistance against {B}t or synthetic insecticides to test if the invasion was accompanied by the spread of resistance mutations using 177 individuals collected from 12 geographic populations including {N}orth and {S}outh {A}merica, {W}est and {E}ast {A}frica, {I}ndia, and {C}hina. {W}e observed that {B}t resistance mutations generated in {P}uerto {R}ico or {B}razil were found only from their native populations, while invasive populations had higher copy numbers of cytochrome {P}450 genes and higher proportions of resistance mutations at {AC}h{E}, which are known to cause resistance against synthetic insecticides. {T}his result explains the susceptibility to {B}t insecticides and the resistance against synthetic insecticides in invasive {C}hinese populations. {T}his information will be helpful in investigating the cause and consequence associated with insecticide resistance. {F}ield evolved resistance to insecticides is one of the main challenges in pest control. {T}he fall armyworm ({FAW}) is a lepidopteran pest species causing severe crop losses, especially corn. {W}hile native to the {A}mericas, the presence of {FAW} was confirmed in {W}est {A}frica in 2016. {S}ince then, the {FAW} has been detected in over 70 countries covering sub-{S}aharan {A}frica, the {M}iddle {E}ast, {N}orth {A}frica, {S}outh {A}sia, {S}outheast {A}sia, and {O}ceania. {I}n this study, we tested whether this invasion was accompanied by the spread of resistance mutations from native to invasive areas. {W}e observed that mutations causing {B}t resistance at {ABCC}2 genes were observed only in native populations where the mutations were initially reported. {I}nvasive populations were found to have higher gene numbers of cytochrome {P}450 genes than native populations and a higher proportion of multiple resistance mutations at acetylcholinesterase genes, supporting strong selective pressure for resistance against synthetic insecticides. {T}his result explains the susceptibility to {B}t insecticides and resistance to various synthetic insecticides in {C}hinese populations. {T}hese results highlight the necessity of regular and standardized monitoring of insecticide resistance in invasive populations using both genomic approaches and bioassay experiments.},
  keywords = {{ABCC}2 ; {B}acillus thuringiensis ; biological invasion ; {C}ytochrome {P}450 ; {F}all armyworm ; insecticide resistance ; {S}podoptera frugiperda ; {ETATS} {UNIS} ; {PUERTO} {RICO} ; {GUADELOUPE} ; {GUYANE} {FRANCAISE} ; {BRESIL} ; {BENIN} ; {OUGANDA} ; {MALAWI} ; {INDE} ; {CHINE}},
  booktitle = {},
  journal = {{I}nsects},
  volume = {12},
  numero = {5},
  pages = {468 [12 p.]},
  year = {2021},
  DOI = {10.3390/insects12050468},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081513},
}